Just take care as i know you will, your babies will be ready to home in Spring. Springtime means (usually) a lot of kittens being born. Make sure folk really know its a big responsibility taking in a baby animal. the Dogs Trust slogan - "A dog is for life" (not just for Christmas) applies to all animals.
What people say & what they do are too different things, check with your local Cats Protection to see if they would help with neutering & guide your prospective homers towards that aim. There is nothing worse than a puppy or kitten having puppies & kittens
Im sure there are experienced home checkers on the forum who could guide you in the questions to ask folk who want to take on one of these babies